The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant stoneseed in Boulder City can be figured out by looking at the USDA zone info.

Planting Calendar for Stoneseed

Frost tolerance for stoneseed:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You can not plant stoneseed until after all chance of frost has passed because they require warm weather.

The earliest that you can plant stoneseed in Boulder City is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant stoneseed and expect a good harvest is probably September. If you wait any later than that and your stoneseed may not have a chance to grow to maturity. Starting your stoneseed indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Boulder City. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Boulder City may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Boulder City you get a frost after February 15 be ready to protect your stoneseed in the event of a surprise late frost.

USDA Zone Info for Boulder City

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Boulder City

You may be interested in your other planting guides for Boulder City.